Modelling Bird Songs: Voice Onset, Overtones and Registers

R Zaccarelli, C P Elemans, William Tecumseh Sherman Fitch, H Herzel

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We analyze two symmetric two-mass models of the avian syrinx. Our first model applies to songbirds and is a rescaled version of the well-known human two-mass model. Our second model (trapezoidal model) introduces a smoother geometry and is used to simulate the ring dove (Streptopelia risoria) syrinx. Simulations show that both models exhibit self-sustained vibrations. We show that the occurrence of collisions and the intensity of harmonics depend strongly on the configuration of the syrinx. The songbird model does not present instabilities. The trapezoidal model, however, displays coexisting limit-cycles that represent vibrations with, and without collisions at the same pressure. Register-like transitions are accompanied by subharmonics and deterministic chaos.

Original languageEnglish
Pages (from-to)741-748
Number of pages8
JournalActa Acustica united with Acustica
Volume92
Issue number5
Publication statusPublished - Sept 2006

Keywords

  • VOCAL-FOLD MODEL
  • 2-MASS MODEL
  • SOUND GENERATION
  • RING DOVES
  • TRACT
  • SYRINX
  • STREPTOPELIA
  • PHONATION
  • VOCALIZATIONS
  • BIFURCATIONS

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